a noise or shout expressing anger at or criticism of somebody who is speaking or performing in public (表示愤怒或反对的)嘘声,不满之声 A chorus of catcalls and boos erupted in the middle of the ballet. 芭蕾舞演出中途爆发了一片嘘声和倒彩声。
Word Originmid 17th cent.: from cat + call, originally denoting a kind of whistle or squeaking instrument used to express disapproval at a theatre.